Two tall buildings are 80m apart. The velocity with which a ball should be thrown horizontally from a window 95m above the ground in one building so that it will enter a window 15m above the ground in the second building is : (g=10m/s2)
A
15m/s
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B
5m/s
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C
10m/s
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D
20m/s
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Solution
The correct option is D20m/s Range =80m Height =80m uv=0 S=−80m a=−10m/s2